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(No Model.) h

. W., M. NOR'CROSS. METAL SHINGLE 0R ROOFING PLATE.

No. 416,851. Patented Dec. 10, 1889..

WITNESSES INVENTQR N. PETERSJPhotoLRMgnpher, Wishinglnm D. O

UNITED STATES PATENT OFFICE.

VVI'IQLIAM M. NOROROSS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THEOORTRIGHT METAL ROOFING COMPANY, OF SAME PLACE.

METAL SHINGLE OR ROOFING-PLATE.

SPECIFICATION forming part of Letters Patent No. 416,851, dated December 10, 1889.

Application filed March 3, 1887. Serial No. 229,564. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM M. Noncnoss, of the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Metal Shingles or Roofing-Plates, of which the following is a true and exact description, due reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to the construction of the seams by which metallic shingles or roofing-plates are united, and has especial reference to those plates theseams of which run vertically up and down the roof, though it may be used on other classes of roofingplates.

The object of my invention is to provide a seam easily made and put together, which shall make use of the spring of the metal to keep the joint tight, maintaining close contact between the inserted flange of one plate and the enveloping fold or flange of the other; and it consists of the particular mode of flanging and uniting the plates hereinafter described, and clearly shown in the drawings, in which- Figure 1 is a perspective view of two of my shingles or plates united together; and Fig. 2 shows, on a larger scale, the construction of the seams and the way in which they are united.

A A are my improved shingles, the edges B of which are bent, as shown on the. left of Fig. 2, first upward at an abrupt angle, preferably ninety degrees, as shown at b, then abruptly back to form a tongue I), which is curved downward, so that its point will be as high as (or preferably higher than) the top of bend b. The oppositeedges 0, shown on the right of Fig. '2, are folded back at c, formingfa U-shaped fold c, the outer portion of theextreme edge of the plate being bent upward, as shown at 0 and continued to form the nailing flange 0 The way in which theseseams are united is shown in the center of Fig. 2, and it will be seen that the spring of the metal formed into the curved flange b will cause the edge b to press hard against the upper part of the fold c, and at the same time cause the inner part b of the curved flange to press tight against the upright fold 0 As will be noticed, the fold c, with the upright fold 0 forms a gutter, which, opening on the sheets below, allows any water which may escape the joint formed 5 5 by b to flow out freely, the tight joint at c b effectually preventing its passage onto the nailing-flange 0 It will at once be seen that the curved shape of the spring-flange b b b greatly facilitates its insertion into the fold c.

The spring-flange may be made straight, so that it will rest throughout against the upper fold of U-fold 6'; but I prefer the curved shape, as shown.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is p 1. A metallic shingle or roofing-plate having one edge 0 bent to form the U-fold c, upright fold c and nailing-flange c and another edge 13 bent to form the upright told I) and curved spring-flange extension b b 11 substantially as and for the purpose specified.

2. A metallic shingle or roofing-plate having one edge O bent to form the U-fold c upright fold c and nailing-flange c and another edge B bent to. form the upright fold b and spring-flange extension, substantially as and for the purpose specified.

WILLIAM M. NOROROSS.

Witnesses:

W. L. LABAR, CHARLES F. ZIEGLER. 

